Michael Tan, MD
NPI 1871150763 · Anesthesiology Physician · Greenwood Village, CO
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Tan, MD is a Anesthesiology Physician provider in Greenwood Village, CO (NPI 1871150763).
Provider details
- NPI number
- 1871150763
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R-11498 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
41 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 29 | $95 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 12 | $173 |
Typical Medicare-allowed amounts for these services range $95–$173 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,830 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 200 Hawkins Dr Dept ofIowa City, IA 52242-1009Phone: (319) 356-2210Fax: (319) 356-2940
- One Hospital DrColumbia, MO 65212-0001Phone: (573) 882-2568Fax: (855) 903-0985
Registry dates
- Enumerated
- 2019-05-25
- Last updated
- 2024-07-15
- Certified
- 2024-07-15
Frequently asked questions
- What is Michael Tan's NPI number?
- Michael Tan's National Provider Identifier (NPI) is 1871150763, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Tan's specialty?
- Michael Tan is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Tan located?
- Michael Tan's practice location on file with NPPES is 8000 E Maplewood Ave Ste 120, Greenwood Village, CO 80111-4766.
- What is Michael Tan's phone number?
- The practice phone number listed in the NPPES registry for Michael Tan is (303) 438-3999.
- Does Michael Tan accept Medicare?
- Michael Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Tan's NPI active?
- Yes — Michael Tan's NPI (1871150763) is active in the NPPES registry as of the last update on 2024-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.